Fixed reception-transmission (RX-TX) time difference for RTT based propagation delay compensation
AssigneeQUALCOMM Incorporated
InventorsLuanxia Yang, Changlong Xu, Jing Sun, Xiaoxia Zhang, Rajat Prakash, Hao Xu, Ozcan Ozturk
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Abstract
Wireless communications systems and methods related to determining and transmitting delay measurements, such as propagation delay, between a base station (BS) and a user equipment (UE) are provided. In some aspects, a UE may receive, from a BS, a positioning reference signal (PRS). The UE may further transmit, in response to and at a predetermined time after the receiving the PRS, a sounding reference signal (SRS) to the BS. Further, the UE may receive, from the BS, a delay measurement corresponding to the PRS.
Claims30
A method of wireless communication performed by a user equipment (UE), the method comprising:
- receiving, from a base station (BS), a positioning reference signal (PRS);
- transmitting, in response to and after a UE reception-transmission time difference following reception of the PRS, a sounding reference signal (SRS) to the BS;
- and
- receiving, from the BS, a delay measurement corresponding to the PRS, wherein the delay measurement is based at least in part on a BS reception-transmission time difference and the UE reception-transmission time difference.
A method of wireless communication performed by a base station (BS), the method comprising:
- transmitting, to a user equipment (UE), a positioning reference signal (PRS);
- receiving, from the UE, a sounding reference signal (SRS);
- and
- transmitting, to the UE, a delay measurement via at least one of a medium access control-control element (MAC-CE) or a physical downlink control channel (PDCCH), wherein the delay measurement is based at least in part on a BS reception-transmission time difference and a UE reception-transmission time difference.
A user equipment (UE), comprising:
- a memory;
- a processor;
- and
- a transceiver;
- and
- at least one processor coupled to the memory and the transceiver, wherein the UE is configured to:
- receive, from a base station (BS), a positioning reference signal (PRS);
- transmit, in response to and after a UE reception-transmission time difference following reception of the PRS, a sounding reference signal (SRS) to the BS;
- and
- receive, from the BS, a delay measurement corresponding to the PRS, wherein the delay measurement is based at least in part on a BS reception-transmission time difference and the UE reception-transmission time difference.
A base station (BS), comprising:
- a memory;
- a processor;
- and
- a transceiver;
- and
- at least one processor coupled to the memory and the transceiver, wherein the BS is configured to:
- transmit, to a user equipment (UE), a positioning reference signal (PRS);
- receive, from the UE, a sounding reference signal (SRS);
- and
- transmit, to the UE, a delay measurement via at least one of a medium access control-control element (MAC-CE) or a physical downlink control channel (PDCCH), wherein the delay measurement is based at least in part on a BS reception-transmission time difference and a UE reception-transmission time difference.
Dependencies are inferred from the claim text.